{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 单摆速度和周期计算公式"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "单摆周期：$$ T=2\\ast\\pi\\ast\\sqrt \\frac{l}{g}$$\n",
    "\n",
    "其中l是线长，g是重力加速度，说明单摆的周期只与线长有关系"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "单摆速度：$$ v=\\sqrt{2gh} $$\n",
    "$$h=\\frac{l}{4},  v=\\sqrt{\\frac{gl}{2}}$$\n",
    "$$h=\\frac{l}{2},  v=\\sqrt{gl}$$\n",
    "$$h=\\frac{3l}{4},  v=\\sqrt{\\frac{3gl}{2}}$$\n",
    "单摆的速度只与线长和高度有关"
   ]
  }
 ],
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